Question

*Maths Homework* *Date - 20/07/2021* *Solve Q.8,9,10 from exercise 4.2 in your notebook*

pls help me i am weak in math

divya if you can ans " thrn ans pls" ​

Answer 1

q8.

solution =

=6.54 x 10^7 + 189.5 x 10^10

=6.54 x 10^7 + [(189.5 x 10^3 x 10^7)]

=6.54 x 10^7 + 1895 x 10^7

=(6.54 + 1895) x 10^7

=(1901.54)10^7

q9.

solution

=0.00000001g = 0.1 x 10^-7 g

= 1x10^-7 x 10^-1 g (use a^m x a^n = a^m+n formula)

=1.0 x 10^-8g

q10.

soltuion=

3 billion 720 million kg

= 3720000kg standard form of 3720000 kg is:

=372 x 10 ^4 i.e. (372 x 10 x 10 x 10 x 10)

use formula ( a^m x a^n = a^m+n)

= 3.72 x 10^4 x 10^2

= 3.72 x 10^6 kg

q8 , 9 , 10 are done your homework answers are here but you have to practice them also try u will succeed...